Method of Integral Hot-Melt Adhesion of a Bicycle Saddle

Abstract

A method of integral hot-melt adhesion of a bicycle saddle contains steps of: a) providing material; b) putting the material into at least one mold; c) inserting a heating plate; d) melting; e) removing the heating plate; f) hot-melting adhesion; and g) taking out. Thereby, the body includes the rubber shell, the flexible layer, and the covering layer. The rubber shell is connected with the support shell by a hot-melting manner so that a peripheral side of the covering layer is bent to and is connected on the bottom of the rubber shell, thus obtaining a security, a smooth appearance, a moisture-proof purpose, a waterproof purpose, a shock absorption, a heat dissipation, an easy cleaning, and a low fabrication cost.

What is claimed is: 
     
         1 . A method of integral hot-melt adhesion of a bicycle saddle comprising steps of:
 a) providing material, wherein a body and a support shell of the bicycle saddle are provided, the body includes a rubber shell, a flexible layer connected on the rubber shell, and a covering layer covered on the flexible layer, wherein a peripheral side of the covering layer is bent to and is connected on a bottom of the rubber shell, the rubber shell of the body has multiple first hot-melt strips arranged on the bottom of the rubber shell, and the support shell includes multiple second hot-melt strips arranged on a top thereof;   b) putting the material into at least one mold, wherein the body is reversely put into a first mold, the support shell is reversely put into a second mold, and the support shell is mounted by the second mold in a vacuum absorbing manner;   c) inserting a heating plate, wherein a heating plate is heated within a predetermined temperature range and is inserted between the second mold and the first mold;   d) melting, wherein the second mold is moved downward, and the first mold is moved upward so that the second mold and the first mold are close to the heating plate, wherein the multiple hot-melt strips of the rubber shell of the body contact with the heating plate, the multiple second hot-melt strips of the support shell contact with the heating plate, and the heating plate heats the multiple first hot-melt strips and the multiple second hot-melt strips in a first predetermined time, thus hot-melting the multiple first hot-melt strips and the multiple second hot-melt strips;   e) removing the heating plate, wherein the first mold is moved upward, and the second mold is moved downward, such that the heating plate is removed outward;   f) hot-melting adhesion, wherein the second mold is moved downward, and the first mold is moved upward, such that the second mold is moved to contact with the first mold, wherein the heating plate heats within a second predetermined time so as to hot-melt connect the multiple first hot-melt strips and the multiple second hot-melt strips integrally, thus adhesion the rubber shell with the support shell; and   g) taking out, wherein the second mold is stopped absorbing the support shell and is moved upward, and the first mold is moved downward, thus taking out a finished product.   
     
     
         2 . The method as claimed in  claim 1 , wherein a cross section of a respective first hot-melt strip is solid and is formed in a rectangle shape, and a cross section of a respective second hot-melt strip is separated in the middle to be formed of two blocks. 
     
     
         3 . The method as claimed in  claim 1 , wherein the multiple first hot-melt strips correspond to or are not aligned with the multiple second hot-melt strips, and the multiple first hot-melt strips and the multiple second hot-melt strips are formed in a circle shape or a strip shape. 
     
     
         4 . The method as claimed in  claim 2 , wherein the multiple first hot-melt strips correspond to or are not aligned with the multiple second hot-melt strips, and the multiple first hot-melt strips and the multiple second hot-melt strips are formed in a circle shape or a strip shape. 
     
     
         5 . The method as claimed in  claim 1 , wherein the multiple first hot-melt strips and the multiple second hot-melt strips are arranged successively or intermittently or the multiple first hot-melt strips and the multiple second hot-melt strips are arranged in a predetermined section. 
     
     
         6 . The method as claimed in  claim 2 , wherein the multiple first hot-melt strips and the multiple second hot-melt strips are arranged successively or intermittently or the multiple first hot-melt strips and the multiple second hot-melt strips are arranged in a predetermined section. 
     
     
         7 . The method as claimed in  claim 1 , wherein the multiple first hot-melt strips correspond to or are not aligned and intersected with the multiple second hot-melt strips. 
     
     
         8 . The method as claimed in  claim 2 , wherein the multiple first hot-melt strips correspond to or are not aligned and intersected with the multiple second hot-melt strips. 
     
     
         9 . The method as claimed in  claim 1 , wherein the peripheral side of the covering layer is bent to and is connected on the bottom of the rubber shell by using a glue or at least one nail, 
     
     
         10 . The method as claimed in  claim 1 , wherein the temperature range is 200° C. to 400° C. 
     
     
         11 . The method as claimed in  claim 1 , wherein the first predetermined hot-melt time is 10 seconds to 20 seconds. 
     
     
         12 . The method as claimed in  claim 1 , wherein the second predetermined hot-melt time is 5 seconds to 15 seconds.